从单个二维衍射强度测量得到三维结构
Three-dimensional structure from single two-dimensional diffraction intensity measurement
摘要：
传统的三维（3D）成像方法需要在不同取向或扫描中对样品进行多次测量。当用相干波探测样品时，单个二维（2D）强度测量是足够的，因为它包含3D样品分布的所有信息。我们展示了一种方法，允许从一个单一的2D强度测量的3D样品分布的重建，在z分辨率超过经典的限制。该方法可以是实用的辐射敏感材料，或在实验设置只允许一个强度测量。
英文摘要：
Conventional three-dimensional (3D) imaging methods require multiple measurements of the sample in different orientation or scanning. When the sample is probed with coherent waves, a single two-dimensional (2D) intensity measurement is sufficient as it contains all the information of the 3D sample distribution. We show a method that allows reconstruction of 3D sample distribution from a single 2D intensity measurement, at the z-resolution exceeding the classical limit. The method can be practical for radiation-sensitive materials, or where the experimental setup allows only one intensity measurement.
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